Aiwa LCX-107 Service Manual page 24

IC DESCRIPTION
IC, LA9241ML
Pin No. Pin Name
1 FIN2
2 FIN1
3 E
4 F
5 TB
6 TE-
7 TE
8 TESI
9 SCI
10 TH
11 TA
12 TD-
13 TD
14 JP
15 TO
16 FD
17 FD-
18 FA
19 FA-
20 FE
21 FE-
22 AGND
23 SP
24 SPI
25 SPG
26 SP-
27 SPD
28 SLEQ
29 SLD
30, 31 SL-, SL+
32, 33 JP-, JP+
34 TGL
35 TOFF
I/O
Pin to which external pickup photo diode is connected. RF signal is created by adding with the
I
FIN1 pin signal. FE signal is created by subtracting from the FIN1 pin signal.
I Pin to which external pickup photo diode is connected.
Pin to which external pickup photo diode is connected. TE signal is created by subtracting from
I
the F pin signal.
I Pin to which external pickup photo diode is connected.
I DC component of the TE signal is input.
I Pin to which external resistor setting the TE signal gain is connected between the TE pin.
O TE signal output pin.
TES "Track Error Sense" comparator input pin. TE signal is passed through a band-pass filter
I
then input.
I Shock detection signal input pin.
I Tracking gain time constant setting pin.
O TA amplifier output pin.
Pin to which external tracking phase compensation constants are connected between the TD and
I
VR pins.
I Tracking phase compensation setting pin.
I Tracking jump signal (kick pulse) amplitude setting pin.
O Tracking control signal output pin.
O Focusing control signal output pin.
Pin to which external focusing phase compensation constants are connected between the FD and
I
FA pins.
Pin to which external focusing phase compensation constants are connected between the FD–
I
and FA– pins.
Pin to which external focusing phase compensation constants are connected between the FA and
I
FE pins.
O FE signal output pin.
I Pin to which external FE signal gain setting resistor is connected between the FE pin.
— Analog signal GND.
O Signal ended output of the CV+and CV- pin input signal.
I Spndle amp input.
I Pin to which external spindle gain setting resistor in 12 cm mode is connected.
Pin to which external spindle phase compensation constants are connected together with SPD
I
pin.
O Spindle control signal output pin.
I Pin to which external sled phase compensation constants are connected.
O Sled control signal output pin.
I Sled advance signal input pin from microprocessor.
I Tracking jump signal input pin from DSP.
I Tracking gain control signal input from DSP. Low gain when TGL = H.
I Tracking off control signal input pin from DSP. Off when TOFF = H.
Description
-24-